diff --git a/src/data/ability.ts b/src/data/ability.ts
index 99753597ea6..038d2c2c1f8 100644
--- a/src/data/ability.ts
+++ b/src/data/ability.ts
@@ -5784,8 +5784,7 @@ export function initAbilities() {
     new Ability(Abilities.POWER_SPOT, 8)
       .attr(AllyMoveCategoryPowerBoostAbAttr, [ MoveCategory.SPECIAL, MoveCategory.PHYSICAL ], 1.3),
     new Ability(Abilities.MIMICRY, 8)
-      .attr(TerrainEventTypeChangeAbAttr)
-      .unimplemented(),
+      .attr(TerrainEventTypeChangeAbAttr),
     new Ability(Abilities.SCREEN_CLEANER, 8)
       .attr(PostSummonRemoveArenaTagAbAttr, [ ArenaTagType.AURORA_VEIL, ArenaTagType.LIGHT_SCREEN, ArenaTagType.REFLECT ]),
     new Ability(Abilities.STEELY_SPIRIT, 8)